When it comes to sculpting a defined midsection one highly effective tool is the stability ball (also known as an exercise ball, Swiss ball, or fitness ball).

In this article we’ll deep-dive into the science behind why stability ball exercises are so effective for core development, and then present five specific exercises with cues, execution steps, pitfalls, and progression/regression options.

Why Use Stability Ball Exercises for Abs?

Using a stability ball challenges the core differently compared to traditional floor or bench exercises. The unstable surface means that your muscles are not just working to move the body through space, but also to stabilize it in the face of perturbation.

A seminal study found that performing curl-up (crunch) exercises on a labile (unstable) surface inc

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